Current-induced spin-wave Doppler shift.
Spin transfer appears to be a promising tool for improving spintronics devices. Experiments that quantitatively access the magnitude of the spin transfer are required for a fundamental understanding of this phenomenon. By inductively measuring spin waves propagating along a permalloy strip subjected to a large electrical current, we observed a current-induced spin wave Doppler shift that we relate to the adiabatic spin transfer torque. Because spin waves provide a well-defined system for performing spin transfer, we anticipate that they could be used as an accurate probe of spin-polarized transport in various itinerant ferromagnets.
Vlaminck
Vincent
V
Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504 CNRS-Université Louis Pasteur, 23 Rue du Loess, 67034 Strasbourg Cedex 2, France.
Bailleul
Matthieu
M